Consider two projects $x$ and $Y$ with the following series of cash flows, over the period from year $0$ to year $5$ :

$x$:$-500,100,120,-150,225,300$

$Y$:$-500,250,400,600,800,=500$

Which of the following statements is correct?

both projects have normal cash flows

only project $Y$ has non$-$normal cash flows

neither project has non$-$normal cash flows

both projects have non$-$normal cash flows

only project $x$ has non$-$normal cash flows